Cubic Crystal-Structured SnTe for Superior Li- and Na-Ion Battery Anodes
- Authors
- Park, Ah-Ram; Park, Cheol-Min
- Issue Date
- Jun-2017
- Publisher
- AMER CHEMICAL SOC
- Keywords
- lithium-ion batteries; sodium-ion batteries; tin telluride; Sn-based compound anodes; Te-based compound anodes
- Citation
- ACS NANO, v.11, no.6, pp 6074 - 6084
- Pages
- 11
- Journal Title
- ACS NANO
- Volume
- 11
- Number
- 6
- Start Page
- 6074
- End Page
- 6084
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/22554
- DOI
- 10.1021/acsnano.7b02039
- ISSN
- 1936-0851
1936-086X
- Abstract
- A cubic crystal-structured Sn-based compound, SnTe, was easily synthesized using a solid-state synthetic process to produce a better rechargeable battery, and its possible application. as a Sn-based high-capacity anode material for Li-ion batteries (LIBs) and Na-ion batteries (NIBs) was investigated. The electrochemically driven phase change mechanisms of the SnTe electrodes during Li and Na insertion/extraction were thoroughly examined utilizing various ex situ analytical techniques. During Li insertion, SnTe was converted to Li4.25Sn and Li2Te; meanwhile, during Na insertion, SnTe experienced a sequential topotactic transition to NaxSnTe (x <= 1.5) and conversion to Na3.75Sn and Na2Te, which recombined into the original SnTe phase after full Li and Na extraction. The distinctive phase change mechanisms provided remarkable electrochemical Li- and Na-ion storage performances, such as large reversible capacities with high Coulombic efficiencies and stable cyclabilities with fast C-rate characteristics, by preparing amorphous-C-decorated nanostructured SnTe-based composites. Therefore, SnTe, with its interesting phase change mechanisms, will be a promising alternative for the oncoming generation of anode materials for LIBs and NIBs.
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